The X-Brake Vented, Acerbis' newest front disc cover, provides unparalleled protection, strength, and design. Features a dual mold-injected design to keep sticks, rocks and other debris from damaging or becoming tangled in the front rotor. Also features ample venting to keep the brake cool in all conditions. The cover also provides protection to the brake caliper. Constructed of durable polypropylene and features a carbon fiber like texture. Notes: ONLY fits stock hubs and a bike-specific aluminum X-BRAKE MOUNTING KIT IS REQUIRED IN ABSOLUTELY EVERY CASE WITHOUT EXCEPTION and is sold separately.